普光高含硫气田开发动态监测技术  

Development dynamic monitoring technologies used in the Puguang high-sulfur gas field

作　　者：曾大乾[1] 彭鑫岭[2] 付德奎[2] 胡杰[2] 吴晓磊[2] 张俊法[1] Zeng Daqian;Peng Xinling;Fu Dekui;Hu Jie;Wu Xiaolei;Zhang Junfa(Sinopec Exploration&Production Research Institute,Beijing 100083,China;Sinopec Zhongyuan Oilfield Company, Puyang,Henan 457001,China)

机构地区：[1]中国石化石油勘探开发研究院 [2]中国石化中原油田分公司

出　　处：《天然气工业》2018年第10期63-69,共7页Natural Gas Industry

基　　金：国家科技重大专项"高含硫气藏安全高效开发技术(三期)"(编号:2016ZX05017);中国石化"十条龙"科技攻关项目"超深高含硫气田提高采收率技术"(P18062)

摘　　要：为了解决普光超深高含硫气田动态监测技术系列和相关标准规范缺乏的难题,基于对国内外高含硫气田的调研,通过设备研制、室内实验、理论研究和现场试验形成了超深高含硫气井产气剖面测井、井下取样及流体相态特征分析、水侵动态预测及产水层位识别、气井产能测试及评价、开发监测安全控制等5项动态监测关键技术,并制订了相关规范标准,进而在该气田进行了应用验证。结果表明:(1)所研制的高抗硫产气剖面测井仪器耐温175℃、耐压105 MPa,产气剖面测井43井次,成功率达100%;(2)所研制的高抗硫井下保压取样器耐温150℃、耐压70 MPa,井下保压取样7井次,成功率达100%;(3)地层压力下降至29.5 MPa时地层中有单质硫析出,气井产气量高于20×10~4m^3/d时井筒中不会产生硫沉积;(4)应用产水层位识别技术和水侵动态预测模型可准确识别产水层位和预测气井出水时间,通过优化、调整气井工作制度以控制水侵速度,延长气井的无水采气期;(5)应用"井下永置式压力计+绳缆输送+井口变流量"测试技术和压力计算模型、试井解释模型实现了气井产能测试全覆盖,气井产能评价结果准确;(6)所设计的绳缆式超高压气密封多级防泄漏控制系统动态气密封压力达50 MPa,研发的防喷装置余气处置工艺实现了143井次测试作业"零泄漏、零污染"。结论认为,上述动态监测技术系列为普光气田科学制订增产增储措施、确保长期稳产发挥了重要作用。There is lack of performance monitoring technologies and related standards and specifications in the Puguang Gas Field,which is ultra deep with high sulfur content.In this paper,five key technologies of dynamic monitoring were developed and the related standards and specifications were formulated by investigating high-sulfur gas fields at home and abroad,combined with equipment development,laboratory experiments,theoretical research and field tests.The five key technologies include gas production profile logging,downhole sampling and fluid phase analysis,dynamic water invasion prediction and water producing horizon identification,gas well productivity testing and evaluation,and development monitoring and safety control of high-sulfur ul tradeep wells.Then,these key technologies were applied for verification in th e Puguang Gas Field.And the following research results were obtained.First,the high-sulfur gas production profile logger has a temperature resistance of 175℃and pressure resistance of 105 MPa.Forty three well times gas production profile logging is carried out with a success ratio of 100%.Second,the high-sulfur downhole pressure sampler has a temperature resistance of 150℃and pressure resistance of 70 MPa.Seven well times downhole pressure sampling is carried out with a success ratio of 100%.Third,elemental sulfur is precipitated in the formation when the formation pressure drops to 29.5 MPa.And no sulfur is deposited in the wellbore when the production rate of gas well is higher than 20×104 m3/d.Fourth,water producing horizons can be identified accurately and water breakthrough time of gas wells can be predicted by using water producing horizon identification technology and dynamic water invasion prediction model.Water influx rates can be controlled and water-free gas production period of gas wells can be extended by optimizing and adjusting the working systems of gas wells.And fifth,full coverage of gas well productivity testing is realized by using the testing technology of"downhole implanted gau

关 键 词：普光气田 超深 高含硫 开发动态监测 产气剖面 相态特征 水侵预测 产能测试 防泄漏 

分 类 号：TE37[石油与天然气工程—油气田开发工程]